2.4 PUMA Defender - What is the FUEL Flow Rate for these engines?

[Robmacca]

Guys...

Does anybody know what the Fuel Flow Rate is for the 2.4 Tdci Pumas?

I've installed a Aux Fuel Filter under the bonnet and just want to make sure it's up to the task at hand... So far so good it appears...

Btw: I know in other makes of vehicles, that if there is a fuel restriction, that a Fault Code can be thrown up, would this also happen with the Tdci Pumas?

[DiscoMick]

I don't know the answer, but would it be the same as the flow rate for the standard fuel filter?

[roverrescue]

Rob
I was also concerned about fuel flow / restriction when installing a secondary filter / water trap on my 2.4.
From what I can gather the actual engine side pump / VCV / rail is unchanged between 2.4 and 2.2.
The intank pump of the 2.2 seems to only be purposed for priming reasons

The racor / Parker unit i installed has an integrated 12V pump in the head. I was thinking I might need to have it wired into ignition circuit to maintain fuel pressure. I tried it without the pump initially (pump is awesome for fuel priming) Over several years I have had no problems!

Soo to answer your question, I don’t know the actual flow rate but it must far exceed fuel requirements as whacking a 2/5 or 10 micron in line seems to matter not

Steve

[MLD]

The info is in the technical specs if you have the RAVE. off the top of my head i can't recall it. i went through the exercise a while back. I run an aftermarket Parker Racor primary fuel filter, R60s (227 lph). The R45 (170 lph) was under spec'd for the flow rate of the 2.4. Thus, it will be north of 170 lph (45 gph). From memory the R45 was only a small margin below the spec but enough for me to upsize to avoid restriction.

[Robmacca]

The info is in the technical specs if you have the RAVE. off the top of my head i can't recall it. i went through the exercise a while back. I run an aftermarket Parker Racor primary fuel filter, R60s (227 lph). The R45 (170 lph) was under spec'd for the flow rate of the 2.4. Thus, it will be north of 170 lph (45 gph). From memory the R45 was only a small margin below the spec but enough for me to upsize to avoid restriction.

Thanks MLD, but I don't have the full RAVE, but do have some bits and pieces of the Manual for the 2.4 and checking through the 700+ page document it doesn't mention anything about flow rate.

The 170lph flow rate u mentioned I think is still well above what I have been told when asking some filter shops. They seem to indicate a flow rate of around 140lph would be sufficient. This also kinda goes along with what MR Auto said to me about when I asked about installing a 12v pump before the main OEM filter for priming purposes. They said a simple Facet pump would be sufficient to do the job. These facet pumps are around 120lph.



If anyone could let me know what the actual figures are that would be greatly appreciated...



Just curious here.... but "IF" there was a fuel restriction with the addition of a 2nd fuel filter - what would be the side-effects when driving? A severe lack of power (at high or low revs?) A studder? A increase in Temps?

[Robmacca]

Rob
I was also concerned about fuel flow / restriction when installing a secondary filter / water trap on my 2.4.
From what I can gather the actual engine side pump / VCV / rail is unchanged between 2.4 and 2.2.
The intank pump of the 2.2 seems to only be purposed for priming reasons

The racor / Parker unit i installed has an integrated 12V pump in the head. I was thinking I might need to have it wired into ignition circuit to maintain fuel pressure. I tried it without the pump initially (pump is awesome for fuel priming) Over several years I have had no problems!

Soo to answer your question, I don’t know the actual flow rate but it must far exceed fuel requirements as whacking a 2/5 or 10 micron in line seems to matter not

Steve

Hey Steve....

For simplicity, I've kept the OEM filter and installed a Mann Hummel Fuel Filter under the Bonnet. The kit came with a 8micron filter but I've changed this to a 2micron. At this point I cannot really say if I can notice a difference in its driving performance (the engine has been remapped) with the 2nd fuel filter installed but I have installed it in such a way that I can quickly and easily return the system back to normal with the quick-fit fuel connections I've used...

I'm currently driving it to/from work to see if I can notice any changes in its performance but my concern is that I may not until a fully load up the Defender and then drive some really steep tracks/roads (ie: when I'm on my next trip)...

[roverrescue]

Understood Rob
I also fitted mine using Ford style fuel fittings to enable bypassing if ever necessary
As the P40 I installed has a water trap with alarm and pump as well as filter I wanted it before the OEM - much more space on a Ute to fit it before OEM.

As I mentioned I was thinking I might need to run the pump continuously for fuel flow reasons but it just hasn’t been a problem over numerous years and nearly 50oookm

Steve